Tetto commerciale Otjiwarongo

Dati geografici
LuogoOtjiwarongo, Namibia
Coordinate geografiche20.5° N, 16.7° E
Irradiazione annua globale2,360 kWh/m2
Media annuale temperatura20.9 °C
Precipitazioni annuali453 mm
Dati tecnici
Data connessione alla reteFebbraio 2013
Potenza installata249.6 kWp
Tipo moduliSF160-S (160 W)
Quantità di moduli1,560
Inclinazione, orientamentoVarious
Produzione stimata515,923 kWh/anno
CO2 risparmiata290,000 kg/anno
Inverter15 x Sunny Tripower STP 17.000 TL-10
Banca finanziatrice
Bank of Windhoek



HopSol provides turn-key solutions for photovoltaic power plants. HopSol´s head office is located in Switzerland and the headquarter of HopSol Africa (Pty) Ltd has been established in Windhoek, Namibia, for its customers in southern Africa, where they have specialized in fulfilling the requirements of the solar industry for desert regions. Furthermore, HopSol acts as a wholesaler of all relevant parts for photovoltaic solar power solutions. Superior quality of modules and balance of equipment, along with engineering experience for desert conditions are crucial success factors.

In early 2013, HopSol installed about 250 kWp on the roof of a SPAR supermarket in the town of Otjiwarongo, Namibia. Theo Borstlap, the owner, was convinced by HopSol’s technical approach, to generate high yields even in hot regions by choosing the right technology. HopSol installed more than 1,500 Solar Frontier CIS thin-film modules on different rooftops of the supermarket building in order to supply the supermarket with self generated energy. The owner of the installation expects an annual electricity output of about 515,000 kWh and a CO2 offset of 290 tons. In doing so, Theo’s Superspar follows the trend towards green energy as first Namibian SPAR supermarket.

Solar Frontier’s CIS thin-film modules were HopSol’s first choice to account for the various orientations and inclines of the building’s roof, as well as Namibia’s hot climate. Even when not at their optimal tilt angle, CIS modules generate high yields due to their excellent low-light behavior. Their lower temperature coefficient also results in higher yield in the hot African ambient temperatures compared to crystalline silicon modules – in some cases up to 15%.